Determination of Communication Range for Range-Free Multi-Hop Localization in Wireless Sensor Networks

Range-free localization schemes are much promising in wireless sensor networks because they can estimate the location of a sensor node without power-consuming and expensive devices for measuring distance or angle information. Among range-free schemes, multi-hop schemes can localize sensor nodes with a few beacon nodes through the multi-hop connection between nodes. Since the localization accuracy depends largely on the communication range in multi-hop schemes, the communication range should be determined considering the relationship between the communication range and the localization accuracy. In this paper, we propose the selection method of the communication range for the DV-Hop scheme, a typical multi-hop scheme. The DV-Hop scheme utilizing the selection method of the communication range leads to better position determination than some existent range-free multi-hop schemes.